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[Little Knowledge, Big Question] How does a spectrophotometer detect COD?
Spectrophotometer is a conventional instrument in modern water quality testing laboratories. Its principle is to use a light source that can generate multiple wavelengths, and then generate a light source of a specific wavelength through a series of spectroscopic devices. After the light passes ...Read more -
Lianhua Technology Product Use Tips Answers
1. When testing, the total nitrogen is lower than the ammonia nitrogen. What is the reason? A: First determine whether the total nitrogen is low or the ammonia nitrogen is high. The detection method of ammonia nitrogen is very simple, but there are too many interferences, which can easily cause ...Read more -
Small knowledge and big knowledge丨Total phosphorus standard sample configuration tutorial
Configuring standard samples is something that needs to be done frequently during experiments. Taking the experiment related to testing water quality indicators as an example, by configuring standard samples, by comparing the measured value with the reference value of the standard sample, one can...Read more -
Small knowledge and big knowledge丨Ammonia nitrogen standard sample configuration tutorial
Configuring standard samples is something that needs to be done frequently during experiments. Taking the experiment related to testing water quality indicators as an example, by configuring standard samples, by comparing the measured value with the reference value of the standard sample, one can...Read more -
Small knowledge and big knowledge丨COD standard sample configuration tutorial
Configuring standard samples is something that needs to be done frequently during experiments. Taking the experiment related to testing water quality indicators as an example, configuring standard samples, by comparing the measured value with the reference value of the standard sample, one can de...Read more -
Experimental knowledge popularization: COD pretreatment-how to eliminate the influence of chloride ions
COD (chemical oxygen demand) water sample pretreatment is an important step to ensure the accuracy of COD measurement. The main purpose is to remove interfering substances in the water sample and adjust the state of the water sample to make it suitable for subsequent COD measurement. In the deter...Read more -
LH-P300 portable multi-parameter water quality meter, the “fighter” in cost-effectiveness!
Environmental protection is the consensus of earthlings, and water quality safety has become one of the focuses of common concern from all walks of life. Whether it is domestic sewage, industrial wastewater, or natural water body monitoring, it is inseparable from accurate and efficient water qu...Read more -
Lianhua Company’s COD consumables classification and special advantages for water quality testing
COD solid consumables Classic LH-D/E series dish colorimetry Features 1. High stability, high accuracy, wide measurement range 2. Powder sealed packaging, easy to transport, easy to store, long shelf life 3. Telephone anti-counterfeiting inquiry of original special reagents to ensure measurement...Read more -
![Application case of five-day biochemical culture method BOD instrument LH-BOD606 in the [wastewater treatment] industry](https://cdn.globalso.com/lhwateranalysis/BOD606-1.jpg)
Application case of five-day biochemical culture method BOD instrument LH-BOD606 in the [wastewater treatment] industry
Scenario: [wastewater treatment] Instrument: LH-BOD606 Background introduction The case customer is a sewage treatment plant, which adopts biochemical treatment technology to treat domestic sewage and some industrial wastewater from various areas of the city. In order to ensure that the effluent ...Read more -
Lianhua Ammonia Nitrogen Experiment Frequently Asked Questions and Answers
Q1: When testing ammonia nitrogen, is it measured in terms of nitrogen element or ammonium ions? Answer: Ammonia nitrogen refers to the sum of nitrogen in the form of free ammonia (NH₃) and ammonium ions (NH₄⁺) in water, so the ammonia nitrogen we usually test is measured in terms of nitrogen. Q2...Read more -
Lianhua COD Experiment Knowledge Summary
Q1: How to quickly understand the approximate concentration range of COD samples? Answer: Take 2.5mL of COD water sample, add D/E consumables and shake it continuously. You can judge the approximate concentration of COD in the water sample by color. The closer the color is to blue-green, the grea...Read more -
Lianhua Technology’s Highlights in 2024: Innovation in Water Quality Testing, Honor and Public Welfare
In the era of rapid development of environmental testing, Lianhua Technology has always been at the forefront, and in 2024, it has achieved remarkable results. This year, Lianhua Technology has continued to deepen its efforts in the field of water quality testing with its outstanding innovation c...Read more
